/**
 * Copyright (C) 2007-2009 Carnegie Mellon University and others.
 *
 * This file is part of Plural.
 *
 * Plural is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as 
 * published by the Free Software Foundation.
 *
 * Plural is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Plural; if not, see <http://www.gnu.org/licenses>.
 *
 * Linking Plural statically or dynamically with other modules is
 * making a combined work based on Plural. Thus, the terms and
 * conditions of the GNU General Public License cover the whole
 * combination.
 *
 * In addition, as a special exception, the copyright holders of Plural
 * give you permission to combine Plural with free software programs or
 * libraries that are released under the GNU LGPL and with code
 * included in the standard release of Eclipse under the Eclipse Public
 * License (or modified versions of such code, with unchanged license).
 * You may copy and distribute such a system following the terms of the
 * GNU GPL for Plural and the licenses of the other code concerned.
 *
 * Note that people who make modified versions of Plural are not
 * obligated to grant this special exception for their modified
 * versions; it is their choice whether to do so. The GNU General
 * Public License gives permission to release a modified version
 * without this exception; this exception also makes it possible to
 * release a modified version which carries forward this exception.
 */
package edu.cmu.cs.plural.perm.parser;

/**
 * This enumerations defines constants with the same names
 * as {@link edu.cmu.cs.plural.annot.Use}, which allows
 * using {@link PermissionUse#valueOf(String)} to get the right
 * instance from a variable binding in an annotation.
 * @author Kevin Bierhoff
 * @since Mar 25, 2009
 */
public enum PermissionUse {
	DISPATCH {
		@Override public boolean isVirtual() { return true; }
		@Override public boolean isFrame() { return false; }
	}, 
	FIELDS {
		@Override public boolean isVirtual() { return false; }
		@Override public boolean isFrame() { return true; }
	},
	DISP_FIELDS {
		@Override public boolean isVirtual() { return true; }
		@Override public boolean isFrame() { return true; }
	};
	public abstract boolean isVirtual();
	public abstract boolean isFrame();
}